X-Git-Url: http://git.salome-platform.org/gitweb/?a=blobdiff_plain;f=src%2FXGUI%2FXGUI_DataModel.cpp;h=344b4bfc3db37a3ae58d7686fc1c2129a6c68472;hb=d9359acfaf1fa39e052d117c30af8a28e117b78d;hp=7dc78aa87730e78ad8d4ff780290c12757b52e13;hpb=aa27aa821a63e70446a5342d0692679042eaa220;p=modules%2Fshaper.git

diff --git a/src/XGUI/XGUI_DataModel.cpp b/src/XGUI/XGUI_DataModel.cpp
index 7dc78aa87..344b4bfc3 100644
--- a/src/XGUI/XGUI_DataModel.cpp
+++ b/src/XGUI/XGUI_DataModel.cpp
@@ -1,12 +1,785 @@
+// Copyright (C) 2014-20xx CEA/DEN, EDF R&D -->
+
+// File:        ModuleBase_IDocumentDataModel.cpp
+// Created:     28 Apr 2015
+// Author:      Vitaly SMETANNIKOV
+
 #include "XGUI_DataModel.h"
 
+#include <ModuleBase_IconFactory.h>
+
+#include <ModelAPI_Session.h>
+#include <ModelAPI_Events.h>
+#include <ModelAPI_ResultParameter.h>
+#include <ModelAPI_AttributeDouble.h>
+#include <ModelAPI_ResultPart.h>
+#include <ModelAPI_Feature.h>
+#include <ModelAPI_CompositeFeature.h>
+#include <ModelAPI_ResultCompSolid.h>
+#include <ModelAPI_Tools.h>
+
+#include <Config_FeatureMessage.h>
+
+#include <Events_Loop.h>
+#include <Events_Error.h>
+
+#include <QIcon>
+#include <QBrush>
+
+#define ACTIVE_COLOR QColor(0,72,140)
+#define PASSIVE_COLOR Qt::black
+
+/// Returns ResultPart object if the given object is a Part feature
+/// Otherwise returns NULL
+ResultPartPtr getPartResult(ModelAPI_Object* theObj)
+{
+  ModelAPI_Feature* aFeature = dynamic_cast<ModelAPI_Feature*>(theObj);
+  if (aFeature) {
+    ResultPtr aRes = aFeature->firstResult();
+    if (aRes.get() && (aRes->groupName() == ModelAPI_ResultPart::group())) {
+      ResultPartPtr aPartRes = std::dynamic_pointer_cast<ModelAPI_ResultPart>(aRes);
+      // Use only original parts, not a placement results
+      if (aPartRes == aPartRes->original())
+      return aPartRes;
+    }
+  }
+  return ResultPartPtr();
+}
+
+/// Returns pointer on document if the given object is document object
+ModelAPI_Document* getSubDocument(void* theObj)
+{
+  ModelAPI_Document* aDoc = dynamic_cast<ModelAPI_Document*>((ModelAPI_Entity*)theObj);
+  return aDoc;
+}
+
+
+
+
+// Constructor *************************************************
+XGUI_DataModel::XGUI_DataModel(QObject* theParent) : ModuleBase_IDocumentDataModel(theParent)
+{
+  myXMLReader.readAll();
+
+  Events_Loop* aLoop = Events_Loop::loop();
+  aLoop->registerListener(this, Events_Loop::eventByName(EVENT_OBJECT_CREATED));
+  aLoop->registerListener(this, Events_Loop::eventByName(EVENT_OBJECT_DELETED));
+  aLoop->registerListener(this, Events_Loop::eventByName(EVENT_DOCUMENT_CHANGED));
+}
+
+//******************************************************
+void XGUI_DataModel::processEvent(const std::shared_ptr<Events_Message>& theMessage)
+{
+  DocumentPtr aRootDoc = ModelAPI_Session::get()->moduleDocument();
+  std::string aRootType = myXMLReader.rootType();
+  std::string aSubType = myXMLReader.subType();
+  int aNbFolders = foldersCount();
+
+  // Created object event *******************
+  if (theMessage->eventID() == Events_Loop::loop()->eventByName(EVENT_OBJECT_CREATED)) {
+    std::shared_ptr<ModelAPI_ObjectUpdatedMessage> aUpdMsg =
+        std::dynamic_pointer_cast<ModelAPI_ObjectUpdatedMessage>(theMessage);
+    std::set<ObjectPtr> aObjects = aUpdMsg->objects();
+
+    std::set<ObjectPtr>::const_iterator aIt;
+    std::string aObjType;
+    for (aIt = aObjects.begin(); aIt != aObjects.end(); ++aIt) {
+      ObjectPtr aObject = (*aIt);
+      // We do not show objects which not has to be shown in object browser
+      if (!aObject->isInHistory())
+        continue;
+
+      aObjType = aObject->groupName();
+      DocumentPtr aDoc = aObject->document();
+      if (aDoc == aRootDoc) {
+        // Check that new folders could appear
+        QStringList aNotEmptyFolders = listOfShowNotEmptyFolders();
+        foreach (QString aNotEmptyFolder, aNotEmptyFolders) {
+          if ((aNotEmptyFolder.toStdString() == aObjType) && (aRootDoc->size(aObjType) == 1))
+            // Appears first object in folder which can not be shown empty
+            insertRow(myXMLReader.rootFolderId(aObjType));
+        }
+        // Insert new object
+        int aRow = aRootDoc->size(aObjType) - 1;
+        if (aObjType == aRootType) {
+          insertRow(aRow + aNbFolders + 1);
+        } else {
+          int aFolderId = myXMLReader.rootFolderId(aObjType);
+          if (aFolderId != -1) {
+            insertRow(aRow, createIndex(aFolderId, 0, -1));
+          }
+        } 
+      } else {
+        // Object created in sub-document
+        QModelIndex aDocRoot = findDocumentRootIndex(aDoc.get());
+        if (aDocRoot.isValid()) {
+          // Check that new folders could appear
+          QStringList aNotEmptyFolders = listOfShowNotEmptyFolders(false);
+          foreach (QString aNotEmptyFolder, aNotEmptyFolders) {
+            if ((aNotEmptyFolder.toStdString() == aObjType) && (aDoc->size(aObjType) == 1))
+              // Appears first object in folder which can not be shown empty
+              insertRow(myXMLReader.subFolderId(aObjType), aDocRoot);
+          }
+          int aRow = aDoc->size(aObjType) - 1;
+          int aNbSubFolders = foldersCount(aDoc.get());
+          if (aObjType == aSubType) {
+            // List of objects under document root
+            insertRow(aRow + aNbSubFolders, aDocRoot);
+          } else {
+            // List of objects under a folder
+            if (aRow != -1) {
+              int aFolderId = myXMLReader.subFolderId(aObjType);
+              if (aFolderId != -1) {
+                insertRow(aRow, createIndex(aFolderId, 0, aDoc.get()));
+              }
+            }
+          }
+        } 
+#ifdef _DEBUG
+        else
+          Events_Error::send("Problem with Data Model definition of sub-document");
+#endif
+      }
+    }
+    // Deleted object event ***********************
+  } else if (theMessage->eventID() == Events_Loop::loop()->eventByName(EVENT_OBJECT_DELETED)) {
+    std::shared_ptr<ModelAPI_ObjectDeletedMessage> aUpdMsg =
+        std::dynamic_pointer_cast<ModelAPI_ObjectDeletedMessage>(theMessage);
+    DocumentPtr aDoc = aUpdMsg->document();
+    std::set<std::string> aGroups = aUpdMsg->groups();
+    std::set<std::string>::const_iterator aIt;
+    for (aIt = aGroups.begin(); aIt != aGroups.end(); ++aIt) {
+      std::string aGroup = (*aIt);
+      if (aDoc == aRootDoc) {  // If root objects
+        int aRow = aRootDoc->size(aGroup);
+        if (aGroup == aRootType) {
+          removeRow(aRow + aNbFolders);
+        } else {
+          int aFolderId = myXMLReader.rootFolderId(aGroup);
+          if (aFolderId != -1) {
+            QModelIndex aFolderIndex = createIndex(aFolderId, 0, -1);
+            removeRow(aRow, aFolderIndex);
+          }
+        }
+        // Check that some folders could erased
+        QStringList aNotEmptyFolders = listOfShowNotEmptyFolders();
+        foreach (QString aNotEmptyFolder, aNotEmptyFolders) {
+          if ((aNotEmptyFolder.toStdString() == aGroup) && (aRootDoc->size(aGroup) == 0))
+            // Appears first object in folder which can not be shown empty
+            removeRow(myXMLReader.rootFolderId(aGroup));
+        }
+      } else {
+        // Remove row for sub-document
+        QModelIndex aDocRoot = findDocumentRootIndex(aDoc.get());
+        if (aDocRoot.isValid()) {
+          int aRow = aDoc->size(aGroup);
+          int aNbSubFolders = foldersCount(aDoc.get());
+          if (aGroup == aSubType) {
+            // List of objects under document root
+            removeRow(aRow + aNbSubFolders, aDocRoot);
+          } else {
+            // List of objects under a folder
+            int aFolderId = myXMLReader.subFolderId(aGroup);
+            if (aFolderId != -1) {
+              removeRow(aRow, createIndex(aFolderId, 0, aDoc.get()));
+            }
+          }
+          // Check that some folders could disappear
+          QStringList aNotEmptyFolders = listOfShowNotEmptyFolders(false);
+          foreach (QString aNotEmptyFolder, aNotEmptyFolders) {
+            if ((aNotEmptyFolder.toStdString() == aGroup) && (aDoc->size(aGroup) == 1))
+              // Appears first object in folder which can not be shown empty
+              removeRow(myXMLReader.subFolderId(aGroup), aDocRoot);
+          }
+        } 
+#ifdef _DEBUG
+        else
+          Events_Error::send("Problem with Data Model definition of sub-document");
+#endif
+      }
+    }
+  } else if (theMessage->eventID() == Events_Loop::loop()->eventByName(EVENT_DOCUMENT_CHANGED)) {
+    DocumentPtr aDoc = ModelAPI_Session::get()->activeDocument();
+    if (aDoc != aRootDoc) {
+      QModelIndex aDocRoot = findDocumentRootIndex(aDoc.get());
+      if (aDocRoot.isValid())
+        emit dataChanged(aDocRoot, aDocRoot);
+#ifdef _DEBUG
+      else
+        Events_Error::send("Problem with Data Model definition of sub-document");
+#endif
+    }
+  } 
+}
+
+//******************************************************
+void XGUI_DataModel::clear()
+{
+
+}
+
+//******************************************************
+void XGUI_DataModel::rebuildDataTree()
+{
+
+}
+
+//******************************************************
+ObjectPtr XGUI_DataModel::object(const QModelIndex& theIndex) const
+{
+  if (theIndex.internalId() < 0) // this is a folder
+    return ObjectPtr();
+  ModelAPI_Object* aObj = (ModelAPI_Object*)theIndex.internalPointer();
+  if (getSubDocument(aObj)) // the selected index is a folder of sub-document
+    return ObjectPtr();
+
+  return aObj->data()->owner();
+}
+
+//******************************************************
+QModelIndex XGUI_DataModel::objectIndex(const ObjectPtr theObject) const
+{
+  std::string aType = theObject->groupName();
+  DocumentPtr aDoc = theObject->document();
+  int aRow = aDoc->index(theObject);
+  if (aRow == -1) {
+    // it could be a part of complex object
+    FeaturePtr aFeature = std::dynamic_pointer_cast<ModelAPI_Feature>(theObject);
+    if (aFeature.get()) {
+      CompositeFeaturePtr aCompFea = ModelAPI_Tools::compositeOwner(aFeature);
+      if (aCompFea.get()) {
+        for (int i = 0; i < aCompFea->numberOfSubs(true); i++) {
+          if (aCompFea->subFeature(i, true) == theObject) {
+            aRow = i;
+            break;
+          }
+        }
+      }
+    } else {
+      ResultPtr aResult = std::dynamic_pointer_cast<ModelAPI_Result>(theObject);
+      if (aResult.get()) {
+        ResultCompSolidPtr aCompRes = ModelAPI_Tools::compSolidOwner(aResult);
+        if (aCompRes.get()) {
+          for (int i = 0; i < aCompRes->numberOfSubs(true); i++) {
+            if (aCompRes->subResult(i, true) == theObject) {
+              aRow = i;
+              break;
+            }
+          }
+        }
+      }
+    }
+    if (aRow == -1)
+      return QModelIndex();
+    else 
+      return createIndex(aRow, 0, theObject.get());
+  }
+  SessionPtr aSession = ModelAPI_Session::get();
+  DocumentPtr aRootDoc = aSession->moduleDocument();
+  if (aDoc == aRootDoc && myXMLReader.rootType() == aType) { 
+    // The object from root document
+    aRow += foldersCount();
+  } else if (myXMLReader.subType() == aType) { 
+    // The object from sub document
+    aRow += foldersCount(aDoc.get());
+  }
+  return createIndex(aRow, 0, theObject.get());
+}
+
+//******************************************************
+QVariant XGUI_DataModel::data(const QModelIndex& theIndex, int theRole) const
+{
+  SessionPtr aSession = ModelAPI_Session::get();
+  DocumentPtr aRootDoc = aSession->moduleDocument();
+  int aNbFolders = foldersCount();
+  int theIndexRow = theIndex.row();
+
+  if ((theRole == Qt::DecorationRole) && (theIndex == lastHistoryIndex()))
+    return QIcon(":pictures/arrow.png");
+
+  if (theIndex.column() == 1)
+    return QVariant();
+
+  int aParentId = theIndex.internalId();
+  if (aParentId == -1) { // root folders
+    switch (theRole) {
+      case Qt::DisplayRole:
+        return QString(myXMLReader.rootFolderName(theIndexRow).c_str()) + 
+          QString(" (%1)").arg(rowCount(theIndex));
+      case Qt::DecorationRole:
+        return QIcon(myXMLReader.rootFolderIcon(theIndexRow).c_str());
+      case Qt::ForegroundRole:
+        if (aSession->activeDocument() == aRootDoc)
+          return QBrush(ACTIVE_COLOR);
+        else
+          return QBrush(PASSIVE_COLOR);
+    }
+  } else { // an object or sub-document
+    ModelAPI_Document* aSubDoc = getSubDocument(theIndex.internalPointer());
+
+    if (theRole == Qt::ForegroundRole) {
+      bool aIsActive = false;
+      if (aSubDoc)
+        aIsActive = (aSession->activeDocument().get() == aSubDoc);
+      else {
+        ModelAPI_Object* aObj = (ModelAPI_Object*)theIndex.internalPointer();
+        if (aObj->isDisabled())
+          return QBrush(Qt::lightGray);
+        aIsActive = (aSession->activeDocument() == aObj->document());
+      }
+      if (aIsActive)
+        return QBrush(ACTIVE_COLOR);
+      else
+        return QBrush(PASSIVE_COLOR);
+    }
 
-XGUI_DataModel::XGUI_DataModel(QObject* theParent)
-  : QAbstractItemModel(theParent)
+    if (aSubDoc) { // this is a folder of sub document
+      switch (theRole) {
+        case Qt::DisplayRole:
+          return QString(myXMLReader.subFolderName(theIndexRow).c_str()) + 
+            QString(" (%1)").arg(rowCount(theIndex));
+        case Qt::DecorationRole:
+          return QIcon(myXMLReader.subFolderIcon(theIndexRow).c_str());
+      }
+    } else {
+      ModelAPI_Object* aObj = (ModelAPI_Object*)theIndex.internalPointer();
+      switch (theRole) {
+      case Qt::DisplayRole:
+        if (aObj->groupName() == ModelAPI_ResultParameter::group()) {
+          ModelAPI_ResultParameter* aParam = dynamic_cast<ModelAPI_ResultParameter*>(aObj);
+          AttributeDoublePtr aValueAttribute = aParam->data()->real(ModelAPI_ResultParameter::VALUE());
+          QString aVal = QString::number(aValueAttribute->value());
+          QString aTitle = QString(aObj->data()->name().c_str());
+          return aTitle + " = " + aVal;
+        }
+        return aObj->data()->name().c_str();
+      case Qt::DecorationRole:
+        return ModuleBase_IconFactory::get()->getIcon(object(theIndex));
+      }
+    }
+  }
+  return QVariant();
+}
+
+//******************************************************
+QVariant XGUI_DataModel::headerData(int theSection, Qt::Orientation theOrient, int theRole) const
+{
+  return QVariant();
+}
+
+//******************************************************
+int XGUI_DataModel::rowCount(const QModelIndex& theParent) const
+{
+  SessionPtr aSession = ModelAPI_Session::get();
+  if (!aSession->hasModuleDocument())
+    return 0;
+  DocumentPtr aRootDoc = aSession->moduleDocument();
+
+  if (!theParent.isValid()) {
+    // Return number of items in root
+    int aNbFolders = foldersCount();
+    int aNbItems = 0;
+    std::string aType = myXMLReader.rootType();
+    if (!aType.empty())
+      aNbItems = aRootDoc->size(aType);
+    return aNbFolders + aNbItems;
+  }
+
+  int aId = theParent.internalId();
+  if (aId == -1) { 
+    // this is a folder under root
+    int aParentPos = theParent.row();
+    std::string aType = myXMLReader.rootFolderType(aParentPos);
+    //qDebug("### %s = %i\n", aType.c_str(), aRootDoc->size(aType));
+    return aRootDoc->size(aType);
+  } else {
+    // It is an object which could have children
+    ModelAPI_Document* aDoc = getSubDocument(theParent.internalPointer());
+    if (aDoc) { 
+      // a folder of sub-document
+      std::string aType = myXMLReader.subFolderType(theParent.row());
+      return aDoc->size(aType);
+    } else {
+      ModelAPI_Object* aObj = (ModelAPI_Object*)theParent.internalPointer();
+      // Check for Part feature
+      ResultPartPtr aPartRes = getPartResult(aObj);
+      if (aPartRes.get()) {
+        DocumentPtr aSubDoc = aPartRes->partDoc();
+        int aNbSubFolders = foldersCount(aSubDoc.get());
+        int aNbSubItems = 0;
+        std::string aSubType = myXMLReader.subType();
+        if (!aSubType.empty())
+          aNbSubItems = aSubDoc->size(aSubType);
+        return aNbSubItems + aNbSubFolders;
+      } else {
+        // Check for composite object
+        ModelAPI_CompositeFeature* aCompFeature = dynamic_cast<ModelAPI_CompositeFeature*>(aObj);
+        if (aCompFeature) 
+          return aCompFeature->numberOfSubs(true);
+        ModelAPI_ResultCompSolid* aCompRes = dynamic_cast<ModelAPI_ResultCompSolid*>(aObj);
+        if (aCompRes) 
+          return aCompRes->numberOfSubs(true);
+      }
+    }
+  }
+  return 0;
+}
+
+//******************************************************
+int XGUI_DataModel::columnCount(const QModelIndex& theParent) const
+{
+  return 2;
+}
+
+//******************************************************
+QModelIndex XGUI_DataModel::index(int theRow, int theColumn, const QModelIndex &theParent) const
+{
+  SessionPtr aSession = ModelAPI_Session::get();
+  DocumentPtr aRootDoc = aSession->moduleDocument();
+  int aNbFolders = foldersCount();
+
+  QModelIndex aIndex;
+
+  if (!theParent.isValid()) {
+    if (theRow < aNbFolders) // Return first level folder index
+      return createIndex(theRow, theColumn, -1);
+    else { // return object under root index
+      std::string aType = myXMLReader.rootType();
+      int aObjId = theRow - aNbFolders;
+      if (aObjId < aRootDoc->size(aType)) {
+        ObjectPtr aObj = aRootDoc->object(aType, aObjId);
+        aIndex = objectIndex(aObj);
+      }
+    }
+  } else {
+    int aId = theParent.internalId();
+    int aParentPos = theParent.row();
+    if (aId == -1) { // return object index inside of first level of folders
+      std::string aType = myXMLReader.rootFolderType(aParentPos);
+      if (theRow < aRootDoc->size(aType)) {
+        ObjectPtr aObj = aRootDoc->object(aType, theRow);
+        aIndex = objectIndex(aObj);
+      }
+    } else {
+      // It is an object which could have children
+      ModelAPI_Document* aDoc = getSubDocument(theParent.internalPointer());
+      if (aDoc) { 
+        // It is a folder of sub-document
+        std::string aType = myXMLReader.subFolderType(aParentPos);
+        if (theRow < aDoc->size(aType)) {
+          ObjectPtr aObj = aDoc->object(aType, theRow);
+          aIndex = objectIndex(aObj);
+        }
+      } else {
+        ModelAPI_Object* aParentObj = (ModelAPI_Object*)theParent.internalPointer();
+
+        // Check for Part feature
+        ResultPartPtr aPartRes = getPartResult(aParentObj);
+        if (aPartRes.get()) {
+          DocumentPtr aSubDoc = aPartRes->partDoc();
+          int aNbSubFolders = foldersCount(aSubDoc.get());
+          if (theRow < aNbSubFolders) { // Create a Folder of sub-document
+            aIndex = createIndex(theRow, theColumn, aSubDoc.get());
+          } else {
+            // this is an object under sub document root
+            std::string aType = myXMLReader.subType();
+            ObjectPtr aObj = aSubDoc->object(aType, theRow - aNbSubFolders);
+            aIndex = objectIndex(aObj);
+          }
+        } else {
+          // Check for composite object
+          ModelAPI_CompositeFeature* aCompFeature = dynamic_cast<ModelAPI_CompositeFeature*>(aParentObj);
+          if (aCompFeature) {
+            aIndex = objectIndex(aCompFeature->subFeature(theRow));
+          } else {
+            ModelAPI_ResultCompSolid* aCompRes = dynamic_cast<ModelAPI_ResultCompSolid*>(aParentObj);
+            if (aCompRes) 
+              aIndex = objectIndex(aCompRes->subResult(theRow));
+          }
+        }
+      }
+    }
+  }
+  if (theColumn != 0)
+    return createIndex(aIndex.row(), theColumn, aIndex.internalPointer());
+  return aIndex;
+}
+
+//******************************************************
+static QModelIndex MYLastDeleted;
+QModelIndex XGUI_DataModel::parent(const QModelIndex& theIndex) const
 {
+  // To avoid additional request about index which was already deleted
+  if (theIndex == MYLastDeleted)
+    return QModelIndex();
+
+  int aId = theIndex.internalId();
+  if (aId != -1) { // The object is not a root folder
+    ModelAPI_Document* aDoc = getSubDocument(theIndex.internalPointer());
+    if (aDoc) { 
+      // It is a folder of sub-document
+      return findDocumentRootIndex(aDoc);
+    }
+    ObjectPtr aObj = object(theIndex);
+    if (!aObj.get()) {
+      // To avoid additional request about index which was already deleted
+      // If deleted it causes a crash on delete object from Part
+      MYLastDeleted = theIndex;
+      return QModelIndex();
+    }
+    // Check is it object a sub-object of a complex object
+    FeaturePtr aFeature = std::dynamic_pointer_cast<ModelAPI_Feature>(aObj);
+    if (aFeature.get()) {
+      CompositeFeaturePtr aCompFea = ModelAPI_Tools::compositeOwner(aFeature);
+      if (aCompFea.get()) {
+        return objectIndex(aCompFea);
+      }
+    }
+    ResultPtr aResult = std::dynamic_pointer_cast<ModelAPI_Result>(aObj);
+    if (aResult.get()) {
+      ResultCompSolidPtr aCompRes = ModelAPI_Tools::compSolidOwner(aResult);
+      if (aCompRes.get()) {
+        return objectIndex(aCompRes);
+      }
+    }
+    // Use as ordinary object
+    std::string aType = aObj->groupName();
+    SessionPtr aSession = ModelAPI_Session::get();
+    DocumentPtr aRootDoc = aSession->moduleDocument();
+    DocumentPtr aSubDoc = aObj->document();
+    if (aSubDoc == aRootDoc) {
+      if (aType == myXMLReader.rootType())
+        return QModelIndex();
+      else {
+        // return first level of folder index
+        int aFolderId = myXMLReader.rootFolderId(aType);
+        // Items in a one row must have the same parent
+        return createIndex(aFolderId, 0, -1);
+      }
+    } else {
+      if (aType == myXMLReader.subType())
+        return findDocumentRootIndex(aSubDoc.get());
+      else {
+        // return first level of folder index
+        int aFolderId = myXMLReader.subFolderId(aType);
+        // Items in a one row must have the same parent
+        return createIndex(aFolderId, 0, aSubDoc.get());
+      }
+    }
+  } 
+  return QModelIndex();
 }
 
+//******************************************************
+bool XGUI_DataModel::hasChildren(const QModelIndex& theParent) const
+{
+  if (!theParent.isValid()) {
+    int aNbFolders = foldersCount();
+    if (aNbFolders > 0)
+      return true;
+    SessionPtr aSession = ModelAPI_Session::get();
+    DocumentPtr aRootDoc = aSession->moduleDocument();
+    return aRootDoc->size(myXMLReader.rootType()) > 0;
+  }
+  if (theParent.internalId() == -1) {
+    std::string aType = myXMLReader.rootFolderType(theParent.row());
+    if (!aType.empty()) {
+      SessionPtr aSession = ModelAPI_Session::get();
+      DocumentPtr aRootDoc = aSession->moduleDocument();
+      return aRootDoc->size(aType) > 0;
+    }
+  } else {
+    ModelAPI_Document* aDoc = getSubDocument(theParent.internalPointer());
+    if (aDoc) { 
+      // a folder of sub-document
+      std::string aType = myXMLReader.subFolderType(theParent.row());
+      return aDoc->size(aType) > 0;
+    } else {
+      // Check that it could be an object with children
+      ModelAPI_Object* aObj = (ModelAPI_Object*)theParent.internalPointer();
+
+      // Check for Part feature
+      ResultPartPtr aPartRes = getPartResult(aObj);
+      if (aPartRes.get())
+        return aPartRes->partDoc().get() != NULL;
+      else {
+        // Check for composite object
+        ModelAPI_CompositeFeature* aCompFeature = dynamic_cast<ModelAPI_CompositeFeature*>(aObj);
+        if (aCompFeature) 
+          return aCompFeature->numberOfSubs(true) > 0;
+        ModelAPI_ResultCompSolid* aCompRes = dynamic_cast<ModelAPI_ResultCompSolid*>(aObj);
+        if (aCompRes) 
+          return aCompRes->numberOfSubs(true) > 0;
+      }
+    }
+  }
+  return false;
+}
 
-XGUI_DataModel::~XGUI_DataModel()
+//******************************************************
+bool XGUI_DataModel::insertRows(int theRow, int theCount, const QModelIndex& theParent)
 {
+  beginInsertRows(theParent, theRow, theRow + theCount - 1);
+  endInsertRows();
+
+  return true;
 }
+
+//******************************************************
+bool XGUI_DataModel::removeRows(int theRow, int theCount, const QModelIndex& theParent)
+{
+  beginRemoveRows(theParent, theRow, theRow + theCount - 1);
+  endRemoveRows();
+  return true;
+}
+
+//******************************************************
+Qt::ItemFlags XGUI_DataModel::flags(const QModelIndex& theIndex) const
+{
+  Qt::ItemFlags aFlags = Qt::ItemIsSelectable;
+
+  ModelAPI_Object* aObj = 0;
+  if (theIndex.internalId() != -1) {
+    if (!getSubDocument(theIndex.internalPointer()))
+      aObj = (ModelAPI_Object*) theIndex.internalPointer();
+  }
+  if (aObj) {
+    if (aObj->isDisabled())
+      return Qt::ItemFlags();
+
+    bool isCompositeSub = false;
+    if (theIndex.column() == 1) {
+      ObjectPtr aObjPtr = aObj->data()->owner();
+      FeaturePtr aFeature = std::dynamic_pointer_cast<ModelAPI_Feature>(aObjPtr);
+      if (aFeature.get()) {
+        CompositeFeaturePtr aCompFea = ModelAPI_Tools::compositeOwner(aFeature);
+        if (aCompFea.get()) 
+          isCompositeSub = true;
+      } else {
+        ResultPtr aResult = std::dynamic_pointer_cast<ModelAPI_Result>(aObjPtr);
+        if (aResult.get()) {
+          ResultCompSolidPtr aCompRes = ModelAPI_Tools::compSolidOwner(aResult);
+          if (aCompRes.get()) 
+            isCompositeSub = true;
+        }
+      }
+    }
+    // An object which is sub-object of a composite object can not be accessible in column 1
+    if (isCompositeSub)
+      return Qt::ItemFlags();
+  }
+
+  aFlags |= Qt::ItemIsEnabled;
+  return aFlags;
+}
+
+//******************************************************
+QModelIndex XGUI_DataModel::findDocumentRootIndex(const ModelAPI_Document* theDoc) const
+{
+  SessionPtr aSession = ModelAPI_Session::get();
+  DocumentPtr aRootDoc = aSession->moduleDocument();
+  if (myXMLReader.isAttachToResult()) { // If document is attached to result
+    int aNb = aRootDoc->size(ModelAPI_ResultPart::group());
+    ObjectPtr aObj;
+    ResultPartPtr aPartRes;
+    for (int i = 0; i < aNb; i++) {
+      aObj = aRootDoc->object(ModelAPI_ResultPart::group(), i);
+      aPartRes = std::dynamic_pointer_cast<ModelAPI_ResultPart>(aObj);
+      if (aPartRes.get() && (aPartRes->partDoc().get() == theDoc)) {
+        int aRow = i;
+        if (myXMLReader.rootType() == ModelAPI_Feature::group())
+          aRow += foldersCount();
+        return createIndex(aRow, 0, aObj.get());
+      }
+    }
+  } else { // If document is attached to feature
+    int aNb = aRootDoc->size(ModelAPI_Feature::group());
+    ObjectPtr aObj;
+    ResultPartPtr aPartRes;
+    for (int i = 0; i < aNb; i++) {
+      aObj = aRootDoc->object(ModelAPI_Feature::group(), i);
+      aPartRes = getPartResult(aObj.get());
+      if (aPartRes.get() && (aPartRes->partDoc().get() == theDoc)) {
+        int aRow = i;
+        if (myXMLReader.rootType() == ModelAPI_Feature::group())
+          aRow += foldersCount();
+        return createIndex(aRow, 0, aObj.get());
+      }
+    }
+  }
+  return QModelIndex();
+}
+
+//******************************************************
+QModelIndex XGUI_DataModel::documentRootIndex(DocumentPtr theDoc) const
+{
+  SessionPtr aSession = ModelAPI_Session::get();
+  DocumentPtr aRootDoc = aSession->moduleDocument();
+  if (theDoc == aRootDoc)
+    return QModelIndex();
+  else 
+    return findDocumentRootIndex(theDoc.get());
+}
+
+//******************************************************
+int XGUI_DataModel::foldersCount(ModelAPI_Document* theDoc) const
+{
+  int aNb = 0;
+  SessionPtr aSession = ModelAPI_Session::get();
+  DocumentPtr aRootDoc = aSession->moduleDocument();
+  if ((theDoc == 0) || (theDoc == aRootDoc.get())) {
+    for (int i = 0; i < myXMLReader.rootFoldersNumber(); i++) {
+      if (myXMLReader.rootShowEmpty(i))
+        aNb++;
+      else {
+        if (aRootDoc->size(myXMLReader.rootFolderType(i)) > 0)
+          aNb++;
+      }
+    }
+  } else {
+    for (int i = 0; i < myXMLReader.subFoldersNumber(); i++) {
+      if (myXMLReader.subShowEmpty(i))
+        aNb++;
+      else {
+        if (theDoc->size(myXMLReader.subFolderType(i)) > 0)
+          aNb++;
+      }
+    }
+  }
+  return aNb;
+}
+
+//******************************************************
+QStringList XGUI_DataModel::listOfShowNotEmptyFolders(bool fromRoot) const
+{
+  QStringList aResult;
+  if (fromRoot) {
+    for (int i = 0; i < myXMLReader.rootFoldersNumber(); i++) {
+      if (!myXMLReader.rootShowEmpty(i))
+        aResult << myXMLReader.rootFolderType(i).c_str();
+    }
+  } else {
+    for (int i = 0; i < myXMLReader.subFoldersNumber(); i++) {
+      if (!myXMLReader.subShowEmpty(i))
+        aResult << myXMLReader.subFolderType(i).c_str();
+    }
+  }
+  return aResult;
+}
+
+//******************************************************
+QModelIndex XGUI_DataModel::lastHistoryIndex() const
+{
+  SessionPtr aSession = ModelAPI_Session::get();
+  DocumentPtr aCurDoc = aSession->activeDocument();
+  FeaturePtr aFeature = aCurDoc->currentFeature(true);
+  if (aFeature.get()) {
+    QModelIndex aInd = objectIndex(aFeature);
+    return createIndex(aInd.row(), 1, aInd.internalPointer());
+  } else {
+    if (aCurDoc == aSession->moduleDocument())
+      return createIndex(foldersCount() - 1, 1, -1);
+    else 
+      return createIndex(foldersCount(aCurDoc.get()) - 1, 1, aCurDoc.get());
+  }
+}
\ No newline at end of file